Environmental Protection Agency, P. O. Box GS 166, Ahafo Regional Office, Accra, Ghana.
Sunyani Technical University, Sunyani, Ghana.
J Environ Public Health. 2021 Nov 8;2021:5834720. doi: 10.1155/2021/5834720. eCollection 2021.
Appreciable levels of trace metals have been reported in the Tano basin, but data on the corresponding levels in fish and the risk they pose to consumers are limited. The levels of 7 trace metals in 18 fish muscles were assessed between November 2016 and October 2017 using acid digestion and PerkinElmer (PinAACle 900T) Atomic Absorption Spectrophotometry. Apart from Cu, all the metals studied were detected in all fish samples. The levels of Cr, As, and Hg were higher than the acceptable levels of fish muscles. Cr concentration ranged from 16.10 ± 0.2 mg/kg in to 57.9 ± 4.2 mg/kg in . The levels of As ranged from 1.01 ± 0.08 in to 3.00 ± 0.01 mg/kg in . Hg level was 0.58 ± 0.69 mg/kg in and 2.52 ± 0.70 mg/kg in . However, Pb, Zn, and Cd concentrations were below the Food and Agriculture Organization limits with low target hazard quotients in all fish samples, suggesting no possible noncarcinogenic risks to adult consumers. Possible noncarcinogenic and carcinogenic health risks were recorded for As, Hg, and Cr in all fish species. Strong associations were observed between Hg, As, Zn, and Cr and between Pb and Cd suggesting a possible common source. fish species was under stress in the river, but the remaining species were in good condition. Periodic monitoring of trace metal concentrations in fish and enforcement of the buffer zone policy are recommended.
塔诺河流域已报告存在可衡量水平的痕量金属，但有关鱼类中相应水平及其对消费者构成的风险的数据有限。2016 年 11 月至 2017 年 10 月，采用酸消解和珀金埃尔默（PinAACle 900T）原子吸收分光光度法评估了 18 种鱼肌肉中 7 种痕量金属的水平。除铜外，所有研究的金属均在所有鱼类样本中被检测到。铬、砷和汞的水平高于鱼类肌肉的可接受水平。Cr 浓度范围从 16.10±0.2mg/kg 在 到 57.9±4.2mg/kg 在 。砷的水平范围从 1.01±0.08mg/kg 在 到 3.00±0.01mg/kg 在 。Hg 水平为 0.58±0.69mg/kg 在 ，2.52±0.70mg/kg 在 。然而，在所有鱼类样本中，Pb、Zn 和 Cd 的浓度低于粮农组织的限量，且低目标危害系数，表明对成年消费者不存在可能的非致癌风险。在所有鱼类物种中，均记录到了 As、Hg 和 Cr 的非致癌和致癌健康风险。Hg、As、Zn 和 Cr 之间以及 Pb 和 Cd 之间存在很强的相关性，表明可能存在共同来源。有 1 种鱼类物种在河流中处于压力之下，但其余物种状况良好。建议定期监测鱼类中痕量金属浓度，并执行缓冲区政策。
